Substitution drills work best at the beginning levels. They enable students to focus
on structure while learning related vocabulary.
Teachers first teach a dialogue or sentence structure, then allow students to
substitute different content words.
A: It's __________ today.
B: It sure is.
A: How about going _____________?
B: I went _______________ last week.
A: All right then. What should we do?
B: Let's stay home and watch TV.
For your reference, see
Online Materials: The Internet TESL Journal
Textbook Recommendations:Expressways Series